Well-rod extractor.



WARRIN W. FRENCH, OF

Patented November 10, 1903.

PATENT OFFICE.

VANDERBILT, MICHIGAN. Y

WELL-Roo EXTRAs-ron.

.SPECIFICATION forming part of Letters Patent No. 743,854, datedNovember 10, 1903.

Appleman nea Mami so, 190s.

To all whom t may concern:

Be it known that I, WARRIN WILLBUR FRENCH, a citizen of the UnitedStates, residing at Vanderbilt, in the county of Otsego and State ofMichigan, have invented a new and useful Improvement in Well-RodExtractors, of which the following isa specification.

The object of my invention is to provide a simple and practical devicefor extracting from well-casings the working rod whenever it becomesbroken or-unconpled at a point low down in the well.

My invention consists in the novel construction and arrangement of aclutch dcvice,which I will now proceed to describe with reference to thedrawings, in which- Figure l is a side elevation ofr the device shown inthe well-casing and about to be applied to the broken end of the workingrod. Fig. 2 is a similar view showing the second stage ofthe applicationof the clutch device, which has now passed down over the broken end ofthe working rod. Fig. 3 shows the third stage of action of the clutchdevice, which has now been closed by a lifting movement which tightlygrips the end of the working rod; and Fig. 4 is a cross-section on the'line 4 4 of Fig. 2.

In the drawings, B represents the well-cas-v ing, and H represents alower section ofthe working rod, which has become broken off.

A C D E F G represent the several parts of my extractor. This consistsof two parallel side members C C, (see Fig. 4,) united at the top at Aand provided with a screw-coup` ling to connect with the rod by which itis op erated. To the lower portion of the two side members C C arerigidly connected by rivets two fixed collars D and E. Between thesecollars and guided on the sides C C is aloose reciprocating collar F, towhich are rigidly atcached two stout upwardly-projecting springarms G G,whose upper ends are turned inwardly and made with chisel edges adaptedto clutch and grip the working rod. These spring clutch-arms lie onopposite sides and in the spaces between the side members C C.

The operation of this extractor is'as follows:

seria No. 150,342. (No more.)

i It is lowered into the well-casing in the position shown in Fig; luntil the inturned ends of the clutch-arms strike the top of the broken`or uncoupled working rod.

pens, this end of the working rod forces up theV arms G and ltheirattached collar F, which slide up on the side members C C nntil saidcollar F strikes the collar D, which acts as a stop. This allows theclutch-arms G G to expand and pass down over the working rod, as seen inFig. 2. Now when a lifting strain is applied to my extractor through itsparts A C C the collar D, which is attached thereto, rides up on thespring-clutches G, forcing them inwardly and tightly gripping theworking rod, and finally the lower collar E takes up against the collarF, as seen in Fig. 3, and the extractor is now firmly attached to thebroken rod and the latter may be lifted out.

Having thus described my invention, what I claim as new, and desire tosecure by Letters` Patent, is-

l. A well-rod extractor comprising a bodyV portion havingl two sideVmembers with two collars rigidly attached to the lower ends of the sameand spaced apart as described, a sliding collar arranged on the sidemembers between the two rigidly-attached collars and spring clutch-armsattached at their lower ends to the slidingcollar and extending upwardlyinside of the upper rigid collar and.

arranged as described to Work between the When this hap- -side membersto grip the well-rod substanp tially as shown and described;

2. A well-rod extractor comprising a body portion having two sidemembers united at the top and provided with a screw-coupling and havingtwo collars at the lower end connecting the side members and' spacedapart as described, a sliding collar arranged on the side membersbetween the two rigid collars and having upwardly-projecting clutch-armsextending through the upper collar and disposed between the side memberssubstantial ly as shown and described.

3. A well-rod extractor comprising body part with two parallel sidemembers, two transverse stops attached to the lower ends-of the sidemember and spaced apart as de- In testimony whereof I have signed myscribed and aslide arranged on the side memname to this specification inthe presence of bers between the two stops and having uptwo subscribingwitnesses. wardly-projecting clutch-arms extending in- W. WV. FRENCH.side the upper stop and playing in the open Witnesses:

spaces between the side members slibstan- W. L. TOWNSEND,

tially as shown and described. H. H. MORROW.

